diff options
Diffstat (limited to 'drivers/clk/zynq/pll.c')
| -rw-r--r-- | drivers/clk/zynq/pll.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/drivers/clk/zynq/pll.c b/drivers/clk/zynq/pll.c index 54f4184de89a..5eca1c14981a 100644 --- a/drivers/clk/zynq/pll.c +++ b/drivers/clk/zynq/pll.c @@ -12,7 +12,7 @@ #include <linux/io.h> /** - * struct zynq_pll + * struct zynq_pll - pll clock * @hw: Handle between common and hardware-specific interfaces * @pll_ctrl: PLL control register * @pll_status: PLL status register @@ -46,27 +46,29 @@ struct zynq_pll { * @hw: Handle between common and hardware-specific interfaces * @rate: Desired clock frequency * @prate: Clock frequency of parent clock - * Returns frequency closest to @rate the hardware can generate. + * Return: frequency closest to @rate the hardware can generate. */ -static long zynq_pll_round_rate(struct clk_hw *hw, unsigned long rate, - unsigned long *prate) +static int zynq_pll_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { u32 fbdiv; - fbdiv = DIV_ROUND_CLOSEST(rate, *prate); + fbdiv = DIV_ROUND_CLOSEST(req->rate, req->best_parent_rate); if (fbdiv < PLL_FBDIV_MIN) fbdiv = PLL_FBDIV_MIN; else if (fbdiv > PLL_FBDIV_MAX) fbdiv = PLL_FBDIV_MAX; - return *prate * fbdiv; + req->rate = req->best_parent_rate * fbdiv; + + return 0; } /** * zynq_pll_recalc_rate() - Recalculate clock frequency * @hw: Handle between common and hardware-specific interfaces * @parent_rate: Clock frequency of parent clock - * Returns current clock frequency. + * Return: current clock frequency. */ static unsigned long zynq_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) @@ -87,7 +89,7 @@ static unsigned long zynq_pll_recalc_rate(struct clk_hw *hw, /** * zynq_pll_is_enabled - Check if a clock is enabled * @hw: Handle between common and hardware-specific interfaces - * Returns 1 if the clock is enabled, 0 otherwise. + * Return: 1 if the clock is enabled, 0 otherwise. * * Not sure this is a good idea, but since disabled means bypassed for * this clock implementation we say we are always enabled. @@ -110,7 +112,7 @@ static int zynq_pll_is_enabled(struct clk_hw *hw) /** * zynq_pll_enable - Enable clock * @hw: Handle between common and hardware-specific interfaces - * Returns 0 on success + * Return: 0 on success */ static int zynq_pll_enable(struct clk_hw *hw) { @@ -167,7 +169,7 @@ static const struct clk_ops zynq_pll_ops = { .enable = zynq_pll_enable, .disable = zynq_pll_disable, .is_enabled = zynq_pll_is_enabled, - .round_rate = zynq_pll_round_rate, + .determine_rate = zynq_pll_determine_rate, .recalc_rate = zynq_pll_recalc_rate }; @@ -179,7 +181,7 @@ static const struct clk_ops zynq_pll_ops = { * @pll_status: Pointer to PLL status register * @lock_index: Bit index to this PLL's lock status bit in @pll_status * @lock: Register lock - * Returns handle to the registered clock. + * Return: handle to the registered clock. */ struct clk *clk_register_zynq_pll(const char *name, const char *parent, void __iomem *pll_ctrl, void __iomem *pll_status, u8 lock_index, |